/Engine/Source/Developer/TextureCompressor/Public/TextureCompressorModule.h
Convert the build settings to an actual texture description containing enough information to describe the texture to hardware APIs.
void GetEncodedTextureDescription ( [FEncodedTextureDescription](API\Developer\TextureFormat\Interfaces\FEncodedTextureDescription) * OutTextureDescription, const [ITextureFormat](API\Developer\TextureFormat\Interfaces\ITextureFormat) * InTextureFormat, int32 InEncodedMip0SizeX, int32 InEncodedMip0SizeY, int32 InEncodedMip0NumSlices, int32 InMipCount, bool bInImageHasAlphaChannel ) const